Improvement in machines for making button-backs



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F. C. CANNON.

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F. C. CANNON.

MACHINE FOR MAKING BUTTQN BACKS. No.185,492. Patented Dec.19, 1876.

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TH E GRAPHIC CU-NY UNITED STATES PATENT Orrroa FREDERICK C. CANNON, OFNEW HAVEN, CONNECTICUT.

IMPROVEMENT IN MACHINES FOR MAKING BUTTON-BACKS.

Specification forming part of Letters Patent No. 185,492, dated December19, 1876; application filed March 27, 1876.

To all whom it may concern Be it known that I, FREDERICK 0. CAN- NON, ofNew Haven, in the county of New- Haven and State of Connecticut, haveinvented a new Machine for Making Button- Backs; and I do hereby declarethe following, when taken in connection with the accompanying drawingsand the letters of reference marked thereon, to be a full, clear, andexact description, and which said drawings constitute part of thisspecification, and represent 1n- Figure 1 a front view; Fig. 2, a topview, the head and punches removed, to show the mechanism on the bed;Fig. 3, a side view; Fig. 4, a vertical section on line w as of Fig. 2,enlarged; Fig. 5, an edge view of the doubler; and Figss6 and 7 thebutton-disks, illustrating the operation of the machine.

This invention relates to a machine for forming the back, making,introducing, and securing the w ireeye to the disk, for thalLclass ofbuttons in which the back is formed from a metal disk, with a wire eyeattached; and the invention consists in the mechanism hereinafterdescribed and recited in the claims, whereby the disk and eye are formedand united complete in a single machine.

A is the bed on which the operative mechanism is placed. From this risesan upright, B, carrying a head, B, and in which the driving-shaft C issupported, caused to revolve by the application of power thereto througha pulley, C. In the head B a Vertical slide, D, is arranged, and causedto reciprocate vertically by connection with the driving-shaft in theusual manner for punching-presses. This slide carries a tool-holder, D,in which is arranged the punch a. Beneath this punch is the die a". Thispunch cuts the disk and forms it into the convex shape, and punches itcentrally for the introduction of the eye. A ,disk thus punched isrepresented enlarged, as E, Fig. 6. The punch carries the disk throughthe die and into a carrier, F, beneath. This carrier is arranged torevolve upon a center, f, and with several perforations near its edgepresented successively beneath the die a, to

receive'thedisk; and it is rotated by means of a pawl, F working in aratchet, F. This pawl is actuated by a cam-groove, F on the main shaft,through levers F and F so that at each revolution the carrier F is movedone point.

The wire from which the eye is to be formed is introduced through aguide, I), and thence, by feed -rolls 1) b", drawn into the machine. Tothese feed-rolls an intermittent movement is imparted by the same camgroove F through the levers F and F working a pawl, F", in a ratchet, Fin connection with the said rolls, each movement of the rolls carryinginto the machine the length of wire necessary for a single eye. The wireis cut oif by a cutter, d, on the tool-holder. It passes into a groove,d, over and across a slot, n, and when it is in that position is cut offby the descent of the cutter, leaving the center of the cut piece orblank over the slot n. Then the doubler G, which is arranged in thetoolholder D so as to pass down into the slot n, strikes the wire,doubles it, and, by its peculiar form, as seen in Figs. 4 and 5, turnsout the ends, as seen in Fig. 6, H being the blank, as it thenappears.This done, a slide, h, actuated through a lever, h, by a cam on thedriving-shaft, moves forward in the slot n and carries with it thepartially-formed eye to its proper position over the perforation in thedisk, as seen in Fig. 4. Then a follower, L, also on the tool-holder,forces the partiallyformed eye through the disk. At the same time ahorizontal slide, m, at right angles to the plane of thepartially-formed eye, is forced forward by the cam-groove L throughlevers L The end of this slide at corresponds to the form of the eye,and enters the bend in the partially-formed eye beneath the disk,expanding and shaping it, as seen in Fig. 7, while the follower L bendsthe ends of the eye down upon the inside of the disk, and completes thearticle. The shaping of the eye beneath, and the bending of the upperends above the disk, firmly fix the eye.

The rotation of the carrier F presents each successive disk for theinsertion and securing of the eye, and thence carries the completedarticle to a point where it may be discharged from the machine.

I claim- 1. The method herein described for inserting and securingbutton-eyes to the backs,

comprehending doubling the wire, inserting it from the inside of thedisk outward through a perforation in the disk, then opening the doubledwire outside the button to form the eye, and setting the ends upon theinside, substantially as specified.

2. In a machine for making button-backs, the combination of thefollowing elements: A

' disk-forming punch, (1; its die a; the intermittently-movingiearrie F,the doubler fG, partially forming the eye, the slide h, for} jtransferring the partially f "rmed eye; the fol-j lower L; and theeye-fornierj m, for settingthej eye in the disk, substantiallyasdeseribedl Witnesses:

JOHN E. EA LE, F. J. Ltmmecron.

